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NALENND Basic NPA NXX Validation API - Followers

The NALENND Basic NPA NXX Validation API allows users to validate a North American telephone area code and exchange NPA NXX combination. This API can also identify the exchange's service area, local access and transport area (LATA), operating company number (OCN), COMMON LANGUAGE Location Identifier Code (CLLI code), and carrier-defined line type.